MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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3330 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
Wafermap

x402 layer for AI agents: 35 pay-per-call resources, x402 service discovery, USDG/USDC.

Finance & CryptoPayments & trading

Outdated check57 ms13 / 22
L50 YouTube Transcripts

Clean transcripts of any YouTube video with captions. Pay per call with x402 USDC, no API key.

MediaPayments & trading

Responded58 ms13 / 22
io.github.ryuamarines/robots-txt-checker

Checks if a URL path is allowed by robots.txt. x402 payment required (Base mainnet USDC).

Finance & CryptoPayments & trading

Outdated check58 ms13 / 22
io.github.ryuamarines/json-schema-validator

Validates JSON against a JSON Schema, lists violations. x402 payment required (Base mainnet USDC).

Developer ToolsPayments & trading

Outdated check58 ms13 / 22
Wren Pre-sign Check

Check a tx, EIP-712 payload, text or Base token before your agent signs. Paid per call over x402.

Developer ToolsCode & DevOps

Responded59 ms13 / 22
ItalyCheck

Italian public bodies by codice fiscale (IndicePA): name, PEC, address. Paid per call via x402.

Developer ToolsCode & DevOps

Outdated check60 ms13 / 22
BTC Intel

Understand where Bitcoin is today, compared with its own history: 0–100 Score and stats since 2011.

Finance & CryptoPayments & trading

Outdated check60 ms13 / 22
Baron Power Play

Pay-per-call AI infra for agents: DeFi market data, LLM inference, STT/TTS. x402 v2, USDC on Base.

Finance & CryptoData access / search

Outdated check61 ms13 / 22
Fabler x402 Tools

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

Finance & CryptoPayments & trading

Outdated check61 ms13 / 22
FinzData Workspace

AI workspace with FinzData built in: stocks, futures, options GEX, macro, crypto data and code runs.

Finance & CryptoPayments & trading

Responded62 ms13 / 22
L50 UK Public Tenders

UK public tenders and awards, supplier track records, buyer spend and top suppliers. x402.

Developer ToolsCode & DevOps

Responded63 ms13 / 22
APAC Reg Notes

Bilingual EN/zh summaries of APAC financial and AI regulatory notices (HKMA, SFC, FSC, JFSA); x402

ProductivityPayments & trading

Responded63 ms13 / 22
L50 Marketplace Data

eBay, Vinted, Poshmark, Reverb and Shopify prices plus a price compare. Pay per call, x402 USDC.

Finance & CryptoPayments & trading

Responded64 ms13 / 22
x402-vend — WebIntel

Pay-per-call web & EU business intelligence for AI agents (x402 USDC on Base). 11 tools.

Data & AnalyticsPayments & trading

Outdated check64 ms13 / 22
L50 UK Vehicle Data

UK MOT history for any registration: status, mileage, clocking check, defects. Pay per call, x402.

Developer ToolsCode & DevOps

Responded65 ms13 / 22
Turkish IBAN, Tax Number & National ID Validation

Checksum validation of Turkish IBANs, tax numbers (VKN) and national IDs (TCKN). Nothing stored.

Developer ToolsCode & DevOps

Responded65 ms13 / 22
Setu.Anantasutra: Agent Tools API

Pay-per-call (x402) tools: Indian ID checks, AI-visibility audits, AI crawler and llms.txt checks

Developer ToolsBrowser & web scraping

Responded65 ms13 / 22
MoneyTools Settle

x402 settle: 0.005 USDC/call, no key; verify, caps; free trial 50 calls/7 days

Finance & CryptoPayments & trading

Responded65 ms13 / 22
Highland Intel APIs

70 pay-per-call APIs: DNS, email auth, security headers, web search, scraping, AI. x402 USDC/Base

Finance & CryptoData access / search

Responded67 ms13 / 22
APAC Licensed-Entity Lookup

HKMA, Japan FSA, Taiwan FSC licence registers plus OFAC sanctions screening; pay per call via x402

Finance & CryptoData access / search

Responded68 ms13 / 22
Axiom Solana Token Risk

Solana token risk: free preview tools; paid x402 full reports (Solana; swap-guard also Base).

Finance & CryptoPayments & trading

Responded68 ms13 / 22
KushBitx AgentProof

Safety checks for AI agents paying on Base: free SpendGuard, paid x402 token risk and preflight.

Finance & CryptoPayments & trading

Responded68 ms13 / 22
Power Strip Security

Prompt-injection shield for agents: read pages, scan content, audit MCP servers and skills. x402.

Developer ToolsCode & DevOps

Responded69 ms13 / 22
Northline ChainKit

Pay-per-call Base & Arc onchain facts for agents: address risk, USDC payment check, tx explain.

Finance & CryptoPayments & trading

Responded69 ms13 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence